FIELD QUALITY CONTROL

removed from battery. Additionally, when battery is on equalize,

rectifier output voltage must be reduced by 2.33 volts for each

cell removed. UPS alarms shall be adjusted as necessary. Notify

Contracting Officer immediately if it becomes necessary to remove

any cell. Defective cells should be replaced as soon as possible.

Contractor, via Contracting Officer, shall contact NFESC ECDet,

Code 65 for assistance.

3.4

FIELD QUALITY CONTROL

Contractor shall be on-site during UPS system testing. Provide equipment,

test instruments, power, load bank, materials and labor required for tests.

Contracting Officer will witness all tests and the tests shall be subject

to his approval. Defects resulting from improper handling or installation

shall be corrected by the Contractor and retested at no additional cost to

the Government. Defects resulting from non-Contractor furnished equipment

failure shall be repaired by equipment manufacturer. Contracting Officer

will make final decisions as to whether a failure was due to improper

installation or defective non-Contractor furnished equipment.

3.4.1

UPS Unit Performance Test

Upon completion of battery activation procedures and as directed by

Contracting Officer, Contractor shall connect load bank to UPS output.

Load bank required shall be determined by the following:

UPS KVA RATING

X

0.8

=

KW of LOAD BANK

Performance test is to be run under the supervision of the UPS technical

representative. UPS unit shall be operated under full load for a minimum

of one hour. Contractor shall be required to operate feeder and bypass

power feeder breakers during testing of the UPS.

[3.4.1.1

Emergency Generator Operation

**************************************************************************

NOTE: Delete this paragraph if an emergency

generator is not required.

**************************************************************************

Test UPS to observe operation with emergency generator service. UPS

technical representative shall verify UPS battery current limiting feature

functions properly.

]3.4.2

Battery Performance Test (Constant KW)

Furnish all labor, material and test equipment necessary to conduct

performance test under the direction of UPS technical representative.

The

following shall be accomplished:

a.

Install a calibrated voltmeter across the battery terminals to

measure voltage, and install a calibrated voltmeter across the UPS

DC shunt to read charging current. UPS technical representative

will advise connection to DC shunt.

b.

Record temperature of pilot cells in battery immediately prior to

start of discharge performance test.

c.

Read and record total battery voltage and battery current at start

SECTION 16262N

Page 18